What other antidepressants are like Viibryd?

I tried Pristiq, Lexapro, Wellbutrin, and Saphris, and they didn't do anything good. Right now I'm on Viibryd and I actually feel different. So what other drugs might be good to take with the Viibryd? I have long-term depression, nothing else. I know that MAOIs are off limits.